# Copyright (c) 2016 Andrew Zenk <azenk@umn.edu>
# GNU General Public License v3.0+ (see LICENSES/GPL-3.0-or-later.txt or https://www.gnu.org/licenses/gpl-3.0.txt)
# SPDX-License-Identifier: GPL-3.0-or-later

# Make coding more python3-ish
from __future__ import annotations

import unittest
from argparse import ArgumentParser
from unittest.mock import patch

from ansible.errors import AnsibleError
from ansible.plugins.loader import lookup_loader
from ansible_collections.community.general.plugins.lookup.lastpass import LPass, LPassException


MOCK_ENTRIES = [
    {
        "username": "user",
        "name": "Mock Entry",
        "password": "t0pS3cret passphrase entry!",
        "url": "https://localhost/login",
        "notes": "Test\nnote with multiple lines.\n",
        "id": "0123456789",
    }
]


class MockLPass(LPass):
    _mock_logged_out = False
    _mock_disconnected = False

    def _lookup_mock_entry(self, key):
        for entry in MOCK_ENTRIES:
            if key == entry["id"] or key == entry["name"]:
                return entry

    def _run(self, args, stdin=None, expected_rc=0):
        # Mock behavior of lpass executable
        base_options = ArgumentParser(add_help=False)
        base_options.add_argument("--color", default="auto", choices=["auto", "always", "never"])

        p = ArgumentParser()
        sp = p.add_subparsers(help="command", dest="subparser_name")

        sp.add_parser("logout", parents=[base_options], help="logout")
        show_p = sp.add_parser("show", parents=[base_options], help="show entry details")

        field_group = show_p.add_mutually_exclusive_group(required=True)
        for field in MOCK_ENTRIES[0].keys():
            field_group.add_argument(f"--{field}", default=False, action="store_true")
        field_group.add_argument("--field", default=None)
        show_p.add_argument("selector", help="Unique Name or ID")

        args = p.parse_args(args)

        def mock_exit(output="", error="", rc=0):
            if rc != expected_rc:
                raise LPassException(error)
            return output, error

        if args.color != "never":
            return mock_exit(error="Error: Mock only supports --color=never", rc=1)

        if args.subparser_name == "logout":
            if self._mock_logged_out:
                return mock_exit(error="Error: Not currently logged in", rc=1)

            logged_in_error = "Are you sure you would like to log out? [Y/n]"
            if stdin and stdin.lower() == "n\n":
                return mock_exit(output="Log out: aborted.", error=logged_in_error, rc=1)
            elif stdin and stdin.lower() == "y\n":
                return mock_exit(output="Log out: complete.", error=logged_in_error, rc=0)
            else:
                return mock_exit(error="Error: aborted response", rc=1)

        if args.subparser_name == "show":
            if self._mock_logged_out:
                return mock_exit(
                    error="Error: Could not find decryption key. Perhaps you need to login with `lpass login`.", rc=1
                )

            if self._mock_disconnected:
                return mock_exit(error="Error: Couldn't resolve host name.", rc=1)

            mock_entry = self._lookup_mock_entry(args.selector)

            if args.field:
                return mock_exit(output=mock_entry.get(args.field, ""))
            elif args.password:
                return mock_exit(output=mock_entry.get("password", ""))
            elif args.username:
                return mock_exit(output=mock_entry.get("username", ""))
            elif args.url:
                return mock_exit(output=mock_entry.get("url", ""))
            elif args.name:
                return mock_exit(output=mock_entry.get("name", ""))
            elif args.id:
                return mock_exit(output=mock_entry.get("id", ""))
            elif args.notes:
                return mock_exit(output=mock_entry.get("notes", ""))

        raise LPassException("We should never get here")


class DisconnectedMockLPass(MockLPass):
    _mock_disconnected = True


class LoggedOutMockLPass(MockLPass):
    _mock_logged_out = True


class TestLPass(unittest.TestCase):
    def setUp(self):
        self.lookup = lookup_loader.get("community.general.lastpass")

    def test_lastpass_cli_path(self):
        lp = MockLPass(path="/dev/null")
        self.assertEqual("/dev/null", lp.cli_path)

    def test_lastpass_build_args_logout(self):
        lp = MockLPass()
        self.assertEqual(["logout", "--color=never"], lp._build_args("logout"))

    def test_lastpass_logged_in_true(self):
        lp = MockLPass()
        self.assertTrue(lp.logged_in)

    def test_lastpass_logged_in_false(self):
        lp = LoggedOutMockLPass()
        self.assertFalse(lp.logged_in)

    def test_lastpass_show_disconnected(self):
        lp = DisconnectedMockLPass()

        with self.assertRaises(LPassException):
            lp.get_field("0123456789", "username")

    def test_lastpass_show(self):
        lp = MockLPass()
        for entry in MOCK_ENTRIES:
            entry_id = entry.get("id")
            for k, v in entry.items():
                self.assertEqual(v.strip(), lp.get_field(entry_id, k))


class TestLastpassPlugin(unittest.TestCase):
    def setUp(self):
        self.lookup = lookup_loader.get("community.general.lastpass")

    @patch("ansible_collections.community.general.plugins.lookup.lastpass.LPass", new=MockLPass)
    def test_lastpass_plugin_normal(self):
        for entry in MOCK_ENTRIES:
            entry_id = entry.get("id")
            for k, v in entry.items():
                self.assertEqual(v.strip(), self.lookup.run([entry_id], field=k)[0])

    @patch("ansible_collections.community.general.plugins.lookup.lastpass.LPass", LoggedOutMockLPass)
    def test_lastpass_plugin_logged_out(self):
        entry = MOCK_ENTRIES[0]
        entry_id = entry.get("id")
        with self.assertRaises(AnsibleError):
            self.lookup.run([entry_id], field="password")

    @patch("ansible_collections.community.general.plugins.lookup.lastpass.LPass", DisconnectedMockLPass)
    def test_lastpass_plugin_disconnected(self):
        entry = MOCK_ENTRIES[0]
        entry_id = entry.get("id")
        with self.assertRaises(AnsibleError):
            self.lookup.run([entry_id], field="password")
